Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polyamine polycarboxylic acid concrete admixture as well as preparation method and application thereof
The invention provides a polyamino polycarboxylic acid concrete admixture as well as a preparation method and application thereof, and relates to the technical field of concrete admixtures. The preparation method comprises the following steps: mixing aminated polysuccinimide, cinnamic acid imidazoline and a cross-linking agent for reaction to obtain a polyamine prepolymer; mixing and reacting the polyamine prepolymer, a polyether monomer, an unsaturated acid monomer, a catalyst, an initiator, a reducing agent and a chain transfer agent to obtain the polyamine polycarboxylic acid concrete admixture. The concrete admixture is obtained by preparing the cinnamic acid imidazoline modified polysuccinimide prepolymer and carrying out water solution free radical polymerization reaction on the cinnamic acid imidazoline modified polysuccinimide prepolymer, the polyether macromonomer and the unsaturated carboxylic acid, contains a large number of amino groups, has the functions of a common polycarboxylic acid water reducing agent, also has the effects of corrosion resistance, water retention, delayed coagulation and the like, and can be used for preparing the concrete admixture. The concrete has an excellent application prospect in concrete.
本发明提供了一种多胺基聚羧酸混凝土外加剂及其制备方法和应用，涉及混凝土外加剂技术领域。所述制备方法包括如下步骤：将胺化的聚琥珀酰亚胺、肉桂酸咪唑啉和交联剂混合反应，得到多胺预聚体；将所述多胺预聚体、聚醚单体、不饱和酸单体、催化剂、引发剂、还原剂和链转移剂混合反应，得到所述多胺基聚羧酸混凝土外加剂。本发明通过制备一种肉桂酸咪唑啉改性聚琥珀酰亚胺预聚体，使其与聚醚大单体和不饱和羧酸通过水溶液自由基聚合反应获得一种混凝土外加剂，含有大量的氨基集团，在具备普通聚羧酸减水剂的功能的同时，兼具阻锈、保水、缓凝等效果，在混凝土中具有优异的应用前景。
Polyamine polycarboxylic acid concrete admixture as well as preparation method and application thereof
The invention provides a polyamino polycarboxylic acid concrete admixture as well as a preparation method and application thereof, and relates to the technical field of concrete admixtures. The preparation method comprises the following steps: mixing aminated polysuccinimide, cinnamic acid imidazoline and a cross-linking agent for reaction to obtain a polyamine prepolymer; mixing and reacting the polyamine prepolymer, a polyether monomer, an unsaturated acid monomer, a catalyst, an initiator, a reducing agent and a chain transfer agent to obtain the polyamine polycarboxylic acid concrete admixture. The concrete admixture is obtained by preparing the cinnamic acid imidazoline modified polysuccinimide prepolymer and carrying out water solution free radical polymerization reaction on the cinnamic acid imidazoline modified polysuccinimide prepolymer, the polyether macromonomer and the unsaturated carboxylic acid, contains a large number of amino groups, has the functions of a common polycarboxylic acid water reducing agent, also has the effects of corrosion resistance, water retention, delayed coagulation and the like, and can be used for preparing the concrete admixture. The concrete has an excellent application prospect in concrete.
本发明提供了一种多胺基聚羧酸混凝土外加剂及其制备方法和应用，涉及混凝土外加剂技术领域。所述制备方法包括如下步骤：将胺化的聚琥珀酰亚胺、肉桂酸咪唑啉和交联剂混合反应，得到多胺预聚体；将所述多胺预聚体、聚醚单体、不饱和酸单体、催化剂、引发剂、还原剂和链转移剂混合反应，得到所述多胺基聚羧酸混凝土外加剂。本发明通过制备一种肉桂酸咪唑啉改性聚琥珀酰亚胺预聚体，使其与聚醚大单体和不饱和羧酸通过水溶液自由基聚合反应获得一种混凝土外加剂，含有大量的氨基集团，在具备普通聚羧酸减水剂的功能的同时，兼具阻锈、保水、缓凝等效果，在混凝土中具有优异的应用前景。
Polyamine polycarboxylic acid concrete admixture as well as preparation method and application thereof
一种多胺基聚羧酸混凝土外加剂及其制备方法和应用
AO FAN (Autor:in) / FANG SHICHANG (Autor:in) / TIAN YINGBING (Autor:in) / CHEN JIE (Autor:in)
12.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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